An area of land under the ruler or a state
Answer:
Accidental reinforcement
Explanation:
Accidental reinforcement occurs when a reinforcer casually concurs with a positive outcome, so the person associate the outcome with the reinforcer. This type of reinforcement is usually the source of superstitious behaviours.
In this case, Roger associated the fact of wearing green underwear to the good grade he got in his test, the green underwear was the reinforcer that casually concurs with the positive outcome which in this case was the good grade, so Roger started associating both and now he wears green underwear on test days.
We can actually deduce here that the main coronary artery that bifurcates into two smaller ones is the left main coronary artery.
<h3>What is coronary artery?</h3>
Coronary artery is known to be the artery that actually supplies blood to the heart muscle. The heart muscle actually needs blood that is rich in oxygen. The coronary artery help to send such blood to the heart muscle.
We can see here that the main coronary artery that bifurcates into two smaller ones is the left main coronary artery.
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